2008 NISSAN TEANA steering

AV
STEERING SWITCH SIGNAL A CIRCUIT
AV-21
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
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Component InspectionINFOID:0000000003765596
Measure the resistance between the steering switch connector ter-
minals.
Standard
JSNIA1145GB
Steering switch
ConditionResistance
Ω Con-
nectorTe r m i -
nalsCon-
nectorTe r m i -
nal
M30314
M303 17SEEK DOWN switch
ON315 – 327
SEEK UP switch ON 119 – 123
SOURCE switch ON 0
15VOL UP switch ON 119 – 123
VOL DOWN switch ON 0

AV-22
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
STEERING SWITCH SIGNAL B CIRCUIT
STEERING SWITCH SIGNAL B CIRCUIT
DescriptionINFOID:0000000003765597
Transmits the steering switch signal to audio unit.
Diagnosis ProcedureINFOID:0000000003765598
1.CHECK STEERING SWITCH SIGNAL B CIRCUIT
1. Disconnect audio unit connector and spiral cable connector.
2. Check continuity between audio unit harness connector and spiral cable harness connector.
3. Check continuity between audio unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable.
3.CHECK AUDIO UNIT VOLTAGE
1. Connect audio unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between audio unit harness connector terminals.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace audio unit.
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-23, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering switch.
Audio unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M46 16 M33 31 Existed
Audio unit
—Continuity
Connector Terminal
M46 16 Ground Not existed
(+) (−)
Vo l ta g e Audio unit
Connector Terminal Connector Terminal
M46 16 M46 15 Approx. 5.0 V

AV
STEERING SWITCH SIGNAL B CIRCUIT
AV-23
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
C
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MB A
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Component InspectionINFOID:0000000003765599
Measure the resistance between the steering switch connector ter-
minals.
Standard
JSNIA1145GB
Steering switch
ConditionResistance
Ω Con-
nectorTe r m i -
nalsCon-
nectorTe r m i -
nal
M30314
M303 17SEEK DOWN switch
ON315 – 327
SEEK UP switch ON 119 – 123
SOURCE switch ON 0
15VOL UP switch ON 119 – 123
VOL DOWN switch ON 0

AV-24
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
STEERING SWITCH SIGNAL GND CIRCUIT
STEERING SWITCH SIGNAL GND CIRCUIT
DescriptionINFOID:0000000003765600
Transmits the steering switch signal to audio unit.
Diagnosis ProcedureINFOID:0000000003765601
1.CHECK STEERING SWITCH SIGNAL GND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect audio unit connector and spiral cable connector.
3. Check continuity between audio unit harness connector and spiral cable harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable.
3.CHECK GROUND CIRCUIT
1. Connect audio unit connector.
2. Check continuity between audio unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace audio unit.
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-25, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering switch.
Audio unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M46 15 M33 33 Existed
Audio unit
—Continuity
Connector Terminal
M46 15 Ground Existed

AV
STEERING SWITCH SIGNAL GND CIRCUIT
AV-25
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
C
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MB A
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Component InspectionINFOID:0000000003765602
Measure the resistance between the steering switch connector ter-
minals.
Standard
JSNIA1145GB
Steering switch
ConditionResistance
Ω Con-
nectorTe r m i -
nalsCon-
nectorTe r m i -
nal
M30314
M303 17SEEK DOWN switch
ON315 – 327
SEEK UP switch ON 119 – 123
SOURCE switch ON 0
15VOL UP switch ON 119 – 123
VOL DOWN switch ON 0

AV-26
< ECU DIAGNOSIS >[AUDIO SYSTEM]
AUDIO UNIT
ECU DIAGNOSIS
AUDIO UNIT
Reference ValuesINFOID:0000000003765603
TERMINAL LAYOUT
PHYSICAL VALUES
JSNIA1428ZZ
Terminal
(Wire color)Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
2
(W)3
(B)Sound signal front LH OutputIgnition
switch
ONSound output.
4
(O/B)5
(W/R)Sound signal rear LH OutputIgnition
switch
ONSound output.
6
(W/G)15
(L/B)Steering switch signal A InputIgnition
switch
ONKeep pressing SOURCE
switch. 0 V
Keep pressing switch.1.0 V
Keep pressing switch.2.0 V
Except for above. 5.0 V
7
(V/W)Ground ACC power supply InputIgnition
switch
ACC— Battery voltage
11
(B/W)12
(BR)Sound signal front RH OutputIgnition
switch
ONSound output.
SKIB3609E
SKIB3609E
SKIB3609E

AV
AUDIO UNIT
AV-27
< ECU DIAGNOSIS >[AUDIO SYSTEM]
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P13
(L)14
(B/W)Sound signal rear RH OutputIgnition
switch
ONSound output.
15
(L/B)GroundSteering switch signal
ground—Ignition
switch
ON—0 V
16
(GR/L)15
(L/B)Steering switch signal B InputIgnition
switch
ONKeep pressing VOL DOWN
switch.0 V
Keep pressing VOL UP
switch.1.0 V
Except for above. 5.0 V
19
(Y)Ground Battery power supply InputIgnition
switch
OFF— Battery voltage
21
(R)GroundAV communication signal
(L)Input/
Output—— —
22
(L)GroundAV communication signal
(H)Input/
Output—— —
33 — FM sub Input — — —
34 — AM-FM main Input — — —
35 Ground Antenna amp. ON signal OutputIgnition
switch
ACC—12.0 V Te r m i n a l
(Wire color)Description
ConditionReference value
(Approx.)
+ – Signal nameInput/
Output
SKIB3609E

AV-34
< SYMPTOM DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM SYMPTOMS
SYMPTOM DIAGNOSIS
AUDIO SYSTEM SYMPTOMS
Symptom TableINFOID:0000000003765605
RELATED TO AUDIO
RELATED TO STEERING SWITCH
Symptoms Check items Possible malfunction location / Action to take
Audio sound is not heard.No sound from all speakers.Audio unit malfunction.
Refer to AV- 3 7 , "
Exploded View".
There is no sound from one of speakers.Sound signal malfunction between audio unit and speaker
on the side where there is no sound.
AM/FM radio is not received. Other audio sounds are normal. Antenna amp. ON signal circuit
 Antenna feeder
 Glass antenna
Audio display does not work. — Audio display power supply and ground circuits.
 AV communication circuits between audio unit and au-
dio display.
Symptoms Inspection location / Probable malfunction location
None of the steering switch operations work.Steering switch signal GND circuit
Refer to AV- 2 4 , "
Diagnosis Procedure".
Only specified switch (1) cannot be operated.Steering switch
Refer to AV- 4 2 , "
Exploded View".
“SOURCE”, “SEEK UP”, “SEEK DOWN” switches of steering
switch are not operational.Steering switch signal A circuit
Refer to AV- 2 0 , "
Diagnosis Procedure".
”VOL UP“, “VOL DOWN” switches of steering switch are not
operational.Steering switch signal B circuit
Refer to AV- 2 2 , "
Diagnosis Procedure".